Fast and accurate analysis of broadband RCS using method of moments with loop-tree basis functions

An efficient method for wide-band electromagnetic (EM) scattering properties analysis of three-dimensional arbitrarily shaped perfectly electric conductor (PEC) objects is proposed in this study. The electric field integral equation (EFIE) is solved by the method of moments (MoM) base on the loop-tree basis functions. The EM properties not only can be achieved accurately in high frequency band, but also in low frequency band within the desired bandwidth using loop-tree basis functions. To improve the computation efficiency, the Maehly approximation method is utilised. Compared with the direct solution method and asymptotic waveform evaluation technique, the proposed technique is found to be efficient in a broadband and wide angular domain with the lower central processing unit time required and without loss of accuracy.